State College police tell the Centre Daily Times (http://bit.ly/HwVdRa ) that a resident found the treats on Thursday morning, several hours before trick-or-treating was to begin.

The treats were similar to marshmallow crisped rice treats, except they were made with a different kind of cereal — and tested positive for marijuana. The three bars were wrapped in foil and found inside a plastic bag that someone apparently dropped by mistake.

Police don't know who made the treats but have been trying to find out.